From their site: We set out to create an up-to-date database for the 110th Congress that provides basic clerical information about members of congress (phone, email, district etc.) via API. Moreover...

The OpenSecrets API provides access to the data displayed on OpenSecrets.org. OpenSecrets performs research to track money in U.S. politics and its effect on elections and public policy. Use the API...

UAPI is an open data API for data reuse. UAPI provides a wealth of university data for study, research or reuseand for assisting in development of mashups and different apps. This public API is part...

GruntRoll Military Verification provides real-time status of 20 million U.S. Military and Veterans by Social Security Number and enlistment year. Given this information, the API will respond with if...

The U.S. Department of Justice (DOJ) News API aggregates over 14,000 press releases, speeches, blog entries, and announcements sourced from the Office of Public Affairs. These documents are available...

Hosted by the U.S. General Services Administration, the SFTool provides a range of sustainable building content for commercial architecture in easily consumable formats. Calls to the SFTools API can...

Taxee is a RESTful API that accepts an income amount and filing status, and calculates the tax amount owed. This filing preparation service takes federal and state mandates as well as deductions into...

ReliefWeb, a specialized digital service of the United Nations Office of Humanitarian Affairs (OCHA), is a source for timely information on global crises and disasters, enabling humanitarians to make...

People can retrieve data from TreasuryDirect.gov programmatically using RESTful APIs. The Treasury Securities API lets users get information on announced securities, auctioned securities, particular...

Pirate Times is the international news service for Pirate Parties International (PPI), a nonprofit group dedicated to promoting consumer rights, author rights, copyright reform, information privacy,...

DemocratieSpel is a platform for civic engagement in the Netherlands. DemocratieSpel allows users to suggest and vote on democracy issues in the Netherlands.
The DemocratieSpel API allows developers...

The Veterans Affairs Facilities API is a Veterans Affairs (VA) service capable of programmatically delivering summary information about VA facilities. The SOAP web service is capable of searching for...

The Nationwide Gravesite Locations API is a data.gov web service providing programmatic access to gravesite locations of U.S. veterans and beneficiaries. This data is provided by a variety of sources...

Statistics of Income (SOI) County-to-County Migration Data is a dataset exposed by Data.gov. The data describes year-to-year address changes between counties and states as reported on individual tax...

The Annual Production Figures of United States Currency API is a service of the Bureau of Engraving and Printing (BEP), a bureau of the U.S. Department of the Treasury. The API details the number of...

The Computational Photography Project for Pill Identification (C3PI) is a National Library of Medicine service that intends to build a standardized information infrastructure for identifying unknown...

The Department of Health and Human Services (HHS) Storefront allows developers to programmatically import content from many HHS websites. Content is accessible through a RESTful interface. The API is...

The Trademark Status and Document Retrieval API is a service of the United States Patent and Trademark Office. The API allows 3rd party applications to query data and documents related to trademarks...

The National Climatic Data Center (NCDC) is a service of NOAA, the National Oceanic and Atmospheric Administration. The NCDC is responsible for preserving, monitoring, assessing, and providing public...

The NWCC (National Water and Climate Center) is a US government organization created to develop information and technology resources on snow, water, climate, and hydrology. The NWCC provides the Air-...

FedBrain is a an economic data aggregator. The FedBrain data is acquired from public domain sources, such as the CIA, International Monetary Fund, World Bank, and the U.S. Federal Reserve Banks. The...

The Park Shark City Platform is a set of free tools from Dutch developers Glimworm, designed to provide citizens with open access to their cityâ€™s parking data. The Park Shark API allows developers...

This SDK is for access to the Socrata Open Data API for Android developers working in Java. Socrata Open Data API (SODA) provides access to a wide variety of social data. Add the SODA client to your...

Use this Objective-C SDK to develop the Socrata Open Data API (SODA) for iOS. SODA provides access to a variety of social data. This SDK can be added as a CocoaPods dependency, static library, or by...